package com.jintoufs.util;

import com.jintoufs.util.date.DateUtils;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Random;
import java.util.UUID;

/**
 * Created by administrator on 2017/1/5.
 */
public class CardCodeGenerator {
    public static String[] chars = new String[]{"a", "b", "c", "d", "e", "f",
            "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s",
            "t", "u", "v", "w", "x", "y", "z", "0", "1", "2", "3", "4", "5",
            "6", "7", "8", "9", "A", "B", "C", "D", "E", "F", "G", "H", "I",
            "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V",
            "W", "X", "Y", "Z"};
    public static String[] nums = new String[]{ "0", "1", "2", "3", "4", "5",
            "6", "7", "8", "9"};


    public static String generateShortUuid() {
        StringBuffer shortBuffer = new StringBuffer();
        String uuid = UUID.randomUUID().toString().replace("-", "");
        for (int i = 0; i < 8; i++) {
            String str = uuid.substring(i * 4, i * 4 + 4);
            int x = Integer.parseInt(str, 16);
            shortBuffer.append(chars[x % 0x3E]);
        }
        return shortBuffer.toString();

    }

    public static String generateRandomPassword() {
        String sources = "0123456789"; // 加上一些字母，就可以生成pc站的验证码了
        Random rand = new Random();
        StringBuffer flag = new StringBuffer();
        for (int j = 0; j < 6; j++)
        {
            flag.append(sources.charAt(rand.nextInt(9)) + "");
        }
        return flag.toString();
    }

    public static String generateShortCode() {
        SimpleDateFormat hhmmss = new SimpleDateFormat(
                "hhmmss");
        String code = DateUtils.date2Str(new Date(), hhmmss);
        return code;

    }

    public static void main(String[]args){
        String code=generateRandomPassword();
        System.out.print("code:"+code);
    }
}